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9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address

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post-6.0 issues.
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Merge tag 'mm-hotfixes-stable-2022-12-10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "Nine hotfixes.

  Six for MM, three for other areas. Four of these patches address
  post-6.0 issues"

* tag 'mm-hotfixes-stable-2022-12-10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  memcg: fix possible use-after-free in memcg_write_event_control()
  MAINTAINERS: update Muchun Song's email
  mm/gup: fix gup_pud_range() for dax
  mmap: fix do_brk_flags() modifying obviously incorrect VMAs
  mm/swap: fix SWP_PFN_BITS with CONFIG_PHYS_ADDR_T_64BIT on 32bit
  tmpfs: fix data loss from failed fallocate
  kselftests: cgroup: update kmem test precision tolerance
  mm: do not BUG_ON missing brk mapping, because userspace can unmap it
  mailmap: update Matti Vaittinen's email address
This commit is contained in:
Linus Torvalds 2022-12-10 17:10:52 -08:00
commit 4cee37b3a4
7 changed files with 29 additions and 19 deletions
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8
include/linux/swapops.h
View file

@ -33,11 +33,13 @@
* can use the extra bits to store other information besides PFN.
*/
#ifdef MAX_PHYSMEM_BITS
#define SWP_PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT)
#define SWP_PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT)
#else /* MAX_PHYSMEM_BITS */
#define SWP_PFN_BITS (BITS_PER_LONG - PAGE_SHIFT)
#define SWP_PFN_BITS min_t(int, \
sizeof(phys_addr_t) * 8 - PAGE_SHIFT, \
SWP_TYPE_SHIFT)
#endif /* MAX_PHYSMEM_BITS */
#define SWP_PFN_MASK (BIT(SWP_PFN_BITS) - 1)
#define SWP_PFN_MASK (BIT(SWP_PFN_BITS) - 1)
/**
* Migration swap entry specific bitfield definitions. Layout: